Respuesta :

Two variables which have a constant ratio between them are said to be proportional.

Answer:

Two variables which have a constant ratio between them are said to be proportional.

Step-by-step explanation:

We have been given an incomplete sentence. We are supposed to complete our given sentence.

We know that two quantities are proportional, when they share a common ratio between them.

Therefore, the missing word from our given sentence is 'proportional'.